Solutions by everydaycalculation.com

1^{st} number: 2 2/20, 2^{nd} number: 10 2/7

4220 + 727 is 86770.

- Find the least common denominator or LCM of the two denominators:

LCM of 20 and 7 is**140**

Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,

4220 = 42 × 720 × 7 = 294140 - Likewise, for the 2nd fraction, since 7 × 20 = 140,

727 = 72 × 207 × 20 = 1440140 - Add the two like fractions:

294140 + 1440140 = 294 + 1440140 = 1734140 - 1734/140 simplified gives 86770
- So, 42/20 + 72/7 = 867/70

In mixed form: 122770

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